TINY-3606: Added docs for the new image_uploadtab configuration option

_data/nav.yml

@@ -263,6 +263,7 @@
     - url: "#image_dimensions"
     - url: "#image_prepend_url"
     - url: "#image_title"
+    - url: "#image_uploadtab"
   - url: "imagetools"
     pages:
     - url: "#imagetools_cors_hosts"

plugins/image.md

@@ -277,6 +277,28 @@ tinymce.init({
 });
 ```
 
+### `image_uploadtab`
+
+This option adds an "Upload" tab to the image dialog allowing you to upload local images, when the [`images_upload_url`]({{site.baseurl}}/configure/file-image-upload/#images_upload_url) is also configured.
+
+**Type:** `Boolean`
+
+**Default Value:** `true`
+
+**Possible Values:** `true`, `false`
+
+##### Example
+
+```js
+tinymce.init({
+  selector: "textarea",  // change this value according to your HTML
+  plugins: "image",
+  menubar: "insert",
+  toolbar: "image",
+  image_uploadtab: false
+});
+```
+
 ## Q: Where are the advanced image options?
 
 Use the `Style Formats` option instead, which is much more powerful.